West Yarmouth, MA
I got an email from Comcast last week announcing the new speeds and saying that I needed to get rid of my "end of life" SA modem and get a DOCSIS 3 model.
I went to their office here on Cape Cod (always an "interesting" experience) and the gal there said I didn't need a new modem and that the SA was not EOL. I pointed out that their web site, linked from the email notice, says it is EOL. She shrugged and gave me a new Cisco DPC 3008 modem and after activation it appears I am getting roughly 23/5 on "Performance" and no more boost.